Hi, I'm planning to invest in NPS but I'm not too sure about what is Tier 1 and 2. Though I tried to read sone informations on that nothing helped me. Please brief me on this. I'm 28 years now working in a private company. I do also have EPF. Is there any website or any other link I can know completely know about NPS and CAMS document. Also how much is the minimum amount to start of with and how much are the interests.Please help.